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Insight into the evolution of the Solanaceae from the parental genomes of Petunia hybrida.

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posted on 23.11.2016, 10:18 by A. Bombarely, M. Moser, A. Amrad, M. Bao, L. Bapaume, C. S. Barry, M. Bliek, M. R. Boersma, L. Borghi, R. Bruggmann, M. Bucher, N. D'Agostino, K. Davies, U. Druege, N. Dudareva, M. Egea-Cortines, M. Delledonne, N. Fernandez-Pozo, P. Franken, L. Grandont, J. S. Heslop-Harrison, J. Hintzsche, M. Johns, R. Koes, X. Lv, E. Lyons, D. Malla, E. Martinoia, N. S. Mattson, P. Morel, L. A. Mueller, J. Muhlemann, E. Nouri, V. Passeri, M. Pezzotti, Q. Qi, D. Reinhardt, M. Rich, K. R. Richert-Pöggeler, T. P. Robbins, M. C. Schatz, M. E. Schranz, R. C. Schuurink, T. Schwarzacher, K. Spelt, H. Tang, S. L. Urbanus, M. Vandenbussche, K. Vijverberg, G. H. Villarino, R. M. Warner, J. Weiss, Z. Yue, J. Zethof, F. Quattrocchio, T. L. Sims, C. Kuhlemeier
Petunia hybrida is a popular bedding plant that has a long history as a genetic model system. We report the whole-genome sequencing and assembly of inbred derivatives of its two wild parents, P. axillaris N and P. inflata S6. The assemblies include 91.3% and 90.2% coverage of their diploid genomes (1.4 Gb; 2n = 14) containing 32,928 and 36,697 protein-coding genes, respectively. The genomes reveal that the Petunia lineage has experienced at least two rounds of hexaploidization: the older gamma event, which is shared with most Eudicots, and a more recent Solanaceae event that is shared with tomato and other solanaceous species. Transcription factors involved in the shift from bee to moth pollination reside in particularly dynamic regions of the genome, which may have been key to the remarkable diversity of floral colour patterns and pollination systems. The high-quality genome sequences will enhance the value of Petunia as a model system for research on unique biological phenomena such as small RNAs, symbiosis, self-incompatibility and circadian rhythms.

History

Citation

Nature Plants, 2, Article number: 16074 (2016)

Author affiliation

/Organisation/COLLEGE OF MEDICINE, BIOLOGICAL SCIENCES AND PSYCHOLOGY/MBSP Non-Medical Departments/Department of Genetics

Version

VoR (Version of Record)

Published in

Nature Plants

Publisher

Nature Publishing Group

issn

2055-026X

eissn

2055-0278

Acceptance date

22/04/2016

Available date

23/11/2016

Publisher version

http://www.nature.com/articles/nplants201674

Notes

Supplementary information is available online http://dx.doi.org/10.1038/nplants.2016.74

Language

en

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